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Maureen Helm c79b1a38aa samples: display: Convert driver and lvgl sample.yaml to use depends_on Converts the display driver and lvgl sample.yaml to select boards for the adafruit_2_8_tft_touch_v2 shield configuration by depending on the arduino_{gpio,i2c,spi} features instead of using an explicit platform_allow list. This will enable twister to automatically select new boards that add support for Arduino ports. The reel_board and reel_board_v2 are excluded due to a conflict between display drivers (onboard display vs. shield display). The ubx_evkannab1_nrf52832 board is excluded due to a conflict between the arduino_spi and arduino_i2c ports, which cannot be used simultaneously. Signed-off-by: Maureen Helm <maureen.helm@nxp.com>		2021-05-19 08:14:25 -05:00
..
boards	boards: hsdk: dts: remove ili9340 from hsdk dts	2021-04-28 10:53:52 -04:00
src
CMakeLists.txt
prj.conf
README.rst
sample.yaml	samples: display: Convert driver and lvgl sample.yaml to use depends_on	2021-05-19 08:14:25 -05:00

README.rst

.. _lvgl-sample:

LittlevGL Basic Sample
######################

Overview
********

This sample application displays "Hello World" in the center of the screen
and a counter at the bottom which increments every second. If an input driver
is supported, such as the touch panel controller on mimxrt10{50,60,64}_evk
boards, "Hello World" is enclosed in a button that changes to the toggled state
when touched.

Requirements
************

Display shield and a board which provides a configuration
for Arduino connectors, for example:

- :ref:`adafruit_2_8_tft_touch_v2` and :ref:`nrf52840dk_nrf52840`
- :ref:`buydisplay_2_8_tft_touch_arduino` and :ref:`nrf52840dk_nrf52840`
- :ref:`ssd1306_128_shield` and :ref:`frdm_k64f`

or a simulated display environment in a native Posix application:

- :ref:`native_posix`
- `SDL2`_

or

- :ref:`mimxrt1050_evk`
- `RK043FN02H-CT`_

or

- :ref:`mimxrt1060_evk`
- `RK043FN02H-CT`_

Building and Running
********************

.. note::
   When deferred logging is enabled you will likely need to increase
   :option:`CONFIG_LOG_STRDUP_BUF_COUNT` and/or
   :option:`CONFIG_LOG_STRDUP_MAX_STRING` to make sure no messages are lost or
   truncated.

Example building for :ref:`nrf52840dk_nrf52840`:

.. zephyr-app-commands::
   :zephyr-app: samples/display/lvgl
   :board: nrf52840dk_nrf52840
   :shield: adafruit_2_8_tft_touch_v2
   :goals: build flash

Example building for :ref:`native_posix`:

.. zephyr-app-commands::
   :zephyr-app: samples/display/lvgl
   :board: native_posix
   :goals: build flash

References
**********

.. target-notes::

.. _LittlevGL Web Page: https://littlevgl.com/
.. _SDL2: https://www.libsdl.org
.. _RK043FN02H-CT: https://www.nxp.com/products/processors-and-microcontrollers/arm-based-processors-and-mcus/i.mx-applications-processors/i.mx-rt-series/4.3-lcd-panel:RK043FN02H-CT